基数词和序数词.doc

一些关于基数词和序数词的知识点口诀：基变序，有规律； 一二三 特殊记 ，ve 要用 f 替； 八加h , 九去 e ； 十几要加 th ; y结尾变 ie ，后面加上 th ; 几十几, 前面不变，后用序。基数词序数词缩写基数词序数词缩写1onefirst1st23twenty-threetwenty-third23rd2twosecond2nd24twenty-fourtwenty-fourth24th3threethird3rd25twenty-fivetwenty-fifth25th4fourfourth4th26twenty-sixtwenty-sixth26th5fivefifth5th27twenty-seventwenty-seventh27th6sixsixth6th28twenty-eighttwenty-eighth28th7sevenseventh7th29twenty-ninetwenty-ninth29th8eighteighth8th30thirtythirtieth30th9nineninth9th40fortyfortieth40th10tententh10th50fiftyfiftieth50th11eleveneleventh11th60sixtysixtieth60th12twelvetwelfth12th70seventyseventieth70th13thirteenthirteenth13th80eightyeightieth80th14fourteenfourteenth14th90ninetyninetieth90th15fifteenfifteenth15th44forty-fourforty-fourth44th16sixteensixteenth16th55fifty-fivefifty-fifth55th17seventeenseventeenth17th66sixty-sixsixty-sixth66th18eighteeneighteenth18th77seventy-sevenseventy-seventh77th19nineteennineteenth19th88eighty-eighteighty-eighth88th20twentytwentieth20th99ninety-nineninety-ninth99th21twenty-onetwenty-first21st22twenty-twotwenty-second22nd语法：序数词通常与the连用日期的表达：最常见的形式 the +序数词+of+月份